Mobile Develop

PrefaceOn the architecture of the article, bloggers have long wanted to write, although recently more popular MVVM, but MVP and MVC is not outdated, the most important thing is to choose the right architecture according to the business. Of course,

Basically we do two-dimensional code implementation method has three main ways: Zbar, ZXing, Avfoundation.The first type: Zbar1. Download zbarsdk and import into the project2. Import Dependent libraries: quartzcore.framework, Corevideo.framework,

Original address: http://blog.csdn.net/h643342713/article/details/522418321. Verify the Mailbox+ (BOOL) Validateemail: (nsstring*) email{NSString *emailstring = @ "[a-z0-9a-z._%-] @[a-za-z0-9.-] \ \. [A-za-z] {2,4} ";Nspredicate *emailpredicate =

Recently encountered a very troublesome problem, using Viewpager to dynamically add pages or delete pages when there is a problem (Java.lang.IllegalStateException:The specified child already have a Parent. You must call Removeview () on the child's

1. You need to call the following function "IOS 8 dedicated" before using corelocation:IOS 8 has made some modifications to the location, including the method of locating authorization, and Cllocationmanager adds the following two methods:(1) Always

1.API level is greater than or equal to 11 support, or use a compatible library, but there are many issues with the compatibility library.2. An action bar belongs to an activity and has its life cycle 3. The Action Bar is divided into 3 categories:

1. Menu Categories General Menu Sub-Menu Context Menu Icon Menu Secondary Menu Alternate Menu 2. Menu Class Andriod.view.menu 3. Menu Parameter Name: string header Menu ID: Integer Group ID: Indicates which group

Android developers may have some experience, early in the beginning, the work is mainly to achieve a variety of UI interface, as well as the implementation of the business logic of the application. At this stage, we will gradually become familiar

is from from the UI threadReason: There is no notification in the main thread ....1, where the bug appears listview.class 1487 rows if (Mitemcount = = 0) {resetlist ();                Invokeonitemscrolllistener ();            Return } else if

Margin and padding are the most commonly used two attributes in a separate elementPadding properties:The Padding property is used to describe how much space is inserted between the bounding rectangle of an element and its child elements. It is

1, Calayer IntroductionCalayer is a very similar concept to UIView, as well as backgroundcolor, frame and other similar properties, we can consider UIView as a special kind of calayer. But in fact UIView is the Calayer package, on the basis of

1:uitableviewcell Drawinrect failed in iOS7Workaround, move the layout of the cell into the new view, implement the Drawinrect in the view, and load the view inside the cell with the following code:@implementation customtableviewcell-(ID)

First, use TextView ImageView Button editview make login pageXML version= "1.0" encoding= "Utf-8"?>LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width=

This article starts at the vast first Sen blog, address: http://www.guohao1206.com/2016/08/23/970.html1. Preparation-Java EnvironmentInstall Java and configure the environment = Java Environment One-click Configuration-Download and Unzip Dex2jar:

About the Apple certificate, I heard the head big, has been head big, has never been changed. Today's head is not, Mister Let pack, oops, I that go AH! Two issues were encountered during the period. I'm so thankful for the two great gods below,

1. Broadcasting mechanismsStandard broadcast:Standard broadcast (normal broadcasts) is a fully asynchronous broadcast that, after a broadcast, all broadcast receivers receive this broadcast message almost at the same time, so there is no sequence

As with the notification is also two controllers, then the code creates the control directly on the code#import "ViewController.h"#import "TwoViewController.h"@interface Viewcontroller (){UIButton *_nextbtn;UILabel *_showlabel;}@end@implementation

Effects such as:The main use of an interface class: MyObject PackageCom.example.jsdemo;ImportAndroid.content.Context;ImportAndroid.support.v7.app.AlertDialog;ImportAndroid.webkit.JavascriptInterface;ImportAndroid.widget.Toast; Public classMyObject

/*** Formatted string 3-bit group (bitwise trade-offs, no-entry)** @param numberobject string to be processed (can be nsnumber)* Number of bits reserved by @param bits** @return Return string*/+ (NSString *) Numberdivision: (ID) numberobject bits:

1. Many of the data that comes with the system (contacts, local information, etc.) is saved in the Sqllite database and then packaged into many contentprovider for other programs to access.2. Operations on the Sqllite database can be operated from